Collection: Cavity Closers

(48 products)

Create an energy-efficient property with high-performance cavity closers. Made from durable materials, our top-rated cavity closers ensure long-lasting protection from heat loss and eliminate cold bridging. Construction Megastore is your go-to for all your insulation needs. So shop our full range below to get started today. 

What customers say about us

We do our best to provide you the best experience ever


Exceptional service, great product choice

Nov 15, 2023

Exceptional service. I needed insulation, this company had the brand I wanted, were able to deal with a query I had via chat and even though it was quite late in the...

A C-Ward


I ordered SuperFoil insulation on 15th…

Nov 16, 2023

I ordered SuperFoil insulation on 15th… I ordered SuperFoil insulation on 15th November and it was delivered on 16th November. The prices are...



Construction Megastore were really...

Nov 15, 2023

Construction Megastore were really helpful and friendly when I was ordering some SuperQuilt and they offer very competitive prices. Highly recommend them!